Arctic Ocean sinkholes

Scientists have discovered massive sinkholes on the Arctic seafloor as submerged permafrost thaws. Rather than climate change, these sinkholes appear to be caused by heated, slowly moving groundwater systems. 

Arctic 30C above normal

Alarming heatwaves at both of the Earth’s poles are causing great concern among climate scientists, who have warned the “unprecedented” events could signal faster and abrupt climate breakdown. 

Arctic sea ice thinning

Over the past two decades, the Arctic has lost about one-third of its winter sea ice volume, mostly due to a decline in sea ice that persists over several decades, called multiyear ice, according to a new study. The study also revealed that sea ice is likely thinner than previous estimates. 

Amazon tipping point

Satellite images taken over the past several decades show that more than 75 percent of the Amazon rainforest is losing resilience, according to a new study published in the journal Nature Climate Change. The vegetation is dryer and takes longer to recover after a disturbance. Even the most densely forested regions struggle to bounce back.